Member Since: December 14, 2008

Country: United States

  • I used two of these guys in a Halloween project. However, the Raspberry Pi with a wifi nub will draw too much current. I just shorted across the PTC so that the Pi and the servos could get the juice they craved.


  • FYI: this connector is also used for the GoPro Hero HD camera's proprietary "bus" on the back of the unit. Using this gizmo, I'm figuring out the power pins and a few other features. Unfortunately, GoPro hasn't enabled all the features to this bus yet, and/or there are features that are only enabled when a known signal is being provided on an undocumented pin. If anyone else has tried reverse-engineering the GoPro, contact me [ e d @ h a l l e y . c c ] and we'll share findings.

  • Please provide the EAGLE layout for this RCA jack footprint (not necessarily the breakout board). I saw no RCA in the current SparkFun library. Maybe I'm missing something. I should have gotten out the calipers to check the footprint I used before sending a proof board to BatchPCB.

  • Thanks for doing this great give-away. I missed out due to the network conditions, but not TOO disappointed.
    Had a shopping cart prepared last night, but couldn't even see a "checkout" button on the site from T-0h:30m to T+1h:30m. Didn't want to hammer the Retry button, but got as far as "Select Shipping Method" once at about T+1h:45m, by the time the give-away money ran out.
    I would suggest that maybe next time (if nobody spoils the love and whines about your generosity), consider a lottery system; e.g., all unique qualifying shopping carts at the appointed time have a chance of getting a special coupon code added, which can be redeemed in the next 48 hours.
    Barring that, I will mention that the ssl.google-analytics.com server was horrible, and it seems that many of your pages won't show key buttons like [Checkout] until the javascript gets back a reply. Unplug the content from all third-party server stuff like this, as well as the other "feature trimming" you mentioned.
    Again, not TOO disappointed, it was a fun gamble. I'll just have to save my lunch money if I want that GPS module...

  • This won't handle 24VDC up to 120A, would it? I saw your note that you're scaling up the board... would love to have something exactly like this for 6S1P lipo or larger.

  • Yep, I immediately thought of cake icing tips. Found some cheap ones, but there's no good way to affix them to the tip without welding or forming some kind of staple.
    The heat gun I found has a metal center core that is held in place by six plastic nubs. After about 90 seconds, even without the icing tip, is starting to soften the plastic nubs, and the smell of burning plastic begins. When I turn it off, I have to hold it upright until it cools, so it won't slowly melt the nubs all the way down to the outer shell. And this is even written in the instructions for the device! Need to find some asbestos-like shims instead.

  • Confirmed. I made this modification and the 5V Vcc was correct. Sketch upload worked on the first try.
    The SJ1 is the blob of solder near the DTR label. I cut the trace between SJ1 and the capacitor instead of removing all the solder from the SJ1 itself. I cut the trace to JP1 Pin4, and used the SJ1 and the C5+ pole as convenient solder points (C5+ instead of C2+ since it's larger).
    FTDI Basic Breakout 5V Mod picture

  • You don't have to devote any ATmega168 RAM to the LCD. This component has its own video RAM, one bit per pixel, 512 bytes total. I think you have to write whole bytes at a time (8 pixels), and it doesn't know how to draw a letter "A" by itself, but the App Note from Kronos Robotics says they have a higher-level Dios library to deal with such operations.
    I have a tiny oscilloscope I bought from another vendor, it looks like this part is identical to the screen they use.